As of Oct 12, 2026, 7:02 PM ET, Polymarket priced this market at 1.6% (little changed over 24 hours). It had $65.5 traded in the past 24 hours, $53.9K of order-book liquidity and a bid-ask spread of 1.3 pts. probcast.co rates the support behind this price as moderate.
Thin market where small orders can move the price, traded by a small group of accounts.
Source: Polymarket price history
Is the move backed by real trading and depth?
The pricing has partial support: healthy trading volume and market depth, a tight spread.
Has the market settled at the new probability?
The probability has held near its current level over the past several hours.
Will the rules resolve without ambiguity?
The resolution rules are relatively specific, with a named source and a defined deadline.
Two different questions: how hard the price is to move, and whose trading set it.
How hard is it to move this price?
Order-book liquidity
$53.9K
Bid-ask spread
1.3 pts
24h volume
$65.5
Total volume
$13.9K
It would take roughly $286.7 of buying to move the price up by ~5 pts.
Little money on the book — a modest order can move this price, so treat swings with care.
Whose opinion is this price?
Accounts
51
Trades
93
over 363 days
Largest order
$155
$719.4 traded across these 93 trades (last 363 days).
A small group of accounts did most of the trading — neither one whale nor a broad crowd.
From the latest trade tape (most recent 200 prints) — a live activity sample, not a lifetime total.
This market will resolve according to the winner of the 2026 midterm Massachusetts U.S. Senate election, inclusive of any run-offs.
This summary shows the opening of the venue's official rules. ProbCast has not yet generated an independent plain-English interpretation for this contract — review the full rules before relying on it.
This market will resolve according to the winner of the 2026 midterm Massachusetts U.S. Senate election, inclusive of any run-offs. A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question. Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date. Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party. The candidates may be named in the contract for the convenience of traders. In the event that any named candidate is replaced as the nominee of their respective party prior to election day, the name in the contract will be updated and the market will resolve based on the replacement nominee of the party. The resolution source for this market is the Associated Press, Fox News, and NBC. This market will resolve once all three sources call the race for the same candidate. If all three sources haven’t called the race in this state for the same candidate, this market will resolve based on the official certification.
The contract must resolve based on what has happened by this date.
Derived from the contract's own mechanics as of Oct 12, 7:09 PM ET. ProbCast does not list scheduled meetings, announcements, or data releases it cannot verify.
Research signals — these models are still accumulating the history needed for full validation, and they can disagree with the headline read. Model confidence: low · expected error ±16 pts.
Thin book and/or wide spread. Small orders can move this price disproportionately, so any single print is noisy and easily overread.
Read with caution —Read the latest price with caution; conditions make it an unreliable summary right now.
Short-term motion of the price line (~1h), distinct from the environment above — not a prediction of the final outcome.
Secondary read: leaning toward Stale price.
A read-only classification of the market environment — how much weight the current price deserves as a read of consensus. It describes conditions, never a trade.
Kalshi prices this same question at 2% vs Polymarket at 2%. The venues broadly agree, which adds confidence to the price.
Compare on Kalshi →